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Resolution is one of the key parameters that determine the quality of the image on the screen. It determines the number of pixels of which the image is composed. The more pixels, the sharper and more detailed the image. As a manufacturer and supplier of displays, we have prepared a guide for you on this topic.
What is the Native Resolution of Display?
The native resolution is the maximum factory resolution at which the screen displays the image as the manufacturer intended and provides the best quality.This is the resolution to which the manufacturer has adjusted the physical design of the screen, that is, the number and arrangement of pixels. Thus, at native resolution, the image is clearest and most detailed. In order to understand the native resolution of a LCD display, it will be better to understand a little about the LCD display technology, especially TFT LCD manufacturing process. First, we need to understand what are pixels.
What Are Pixels?
Pixel, also called Picture Element, A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device. A pixel is the basic logical unit in digital graphics. Pixels are combined to form a complete image, video, text, or any visible thing on a computer display.
LCD display doesn’t operate the same way as CRT displays , which fires electrons at a glass screen, a LCD display has individual pixels arranged in a rectangular grid. Each pixel has RGB(Red, Green, Blue) sub-pixel that can be turned on or off. When all of a pixel’s sub-pixels are turned off, it appears black. When all the sub-pixels are turned on 100%, it appears white. By adjusting the individual levels of red, green, and blue light, millions of color combinations are possible
Fig.1 LCD Pixel With RGB Sub-pixels
The pixels of the LCD screen were made by circuitry and electrodes of the backplane. Each sub-pixel contains a TFT (Thin Film Transistor) element. These structures are formed by depositing various materials (metals and silicon) on to the glass substrate that will become one part of the complete display “stack,” and then making them through photolithography. For more information about TFT LCDs,The etched pixels by photolith process are the Native Resolution. Actually, all the flat panel displays, LCD, OLED, Plasma etc.) have native resolution which are different from CRT monitors.HD TV has 1280×720 = 921,600 pixels; Full HD has 1920x 1080=2,073,600 pixels; 8K TV has 7,680×4,320=33,177,600 pixels. he “K” in 8K stands for Kilo (1000), meaning a TV that has achieved a horizonal resolution of about 8,000 pixels.
Definition of screen resolution
Resolution is expressed by two numbers indicating the number of pixels horizontally and vertically. For example, a resolution of 1920 x 1080 means we have 1920 pixels horizontally and 1080 pixels vertically. This brings the total to about 2 million pixels. For comparison, here are examples of popular screen resolutions:
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- 480p (WVGA) – 800 x 480 pixels
- 720p (HD) – 1280 x 720 pixels.
- 1080p (Full HD) – 1920 x 1080 pixels.
- 1440p (2K QHD) – 2560 x 1440 pixels
- 2160p (4K UHD) – 3840 x 2160 pixels
- 4320p (8K UHD) – 7680 x 4320 pixels.
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The higher the resolution, the sharper and more detailed the image, as it contains more information. However, a higher resolution also means more processing power is required for a computer or other display device.
LCD Screen Resolution Chart
| Abbr | Resolution | Abbr | Resolution | Abbr | Resolution | Abbr | Resolution |
| QQVGA | 120×160 | QCIF | 176×220 | QVGA | 320×240/ | WQVGA | 240×400/ |
| HVGA | 320×480 | nHD | 360×640 | qHD | 540×960 | VGA | 640×480/ |
| DVGA | 640×960 | WVGA | 800×480 | FWVGA | 480×854 | HD | 720×1280 |
| SVGA | 800×600 | WSVGA | 1024×600 | XGA | 1024×768 | WXGA | 1280×720/ |
| XGA+ | 1152×864 | WXGA+ | 1366×768 | SXGA | 1280×1024/ | WSXGA | 1440×900 |
| SXGA+ | 1400×1050 | WSXGA+ | 1680×1050 | UXGA | 1600×1200 | WUXGA | 1920×1200 |
| QXGA | 2048×1536 | WQXGA | 2560×1600 | UHD | 3840×2160 |
Image scaling vs. resolution
What happens when you connect a device with a certain resolution to a screen with another, usually higher, resolution? In this case, the image must be scaled, that is, converted to the resolution of the display. For example, when watching a 720p (HD) movie on a 4K TV, the TV must scale the HD picture to its native 4K resolution. It does this by interpolation – adding artificial pixels to increase image density. Similarly, a console game rendered in 1080p will scale to a higher monitor resolution, such as 1440p or 4K.
Scaling usually improves image sharpness and allows better use of the display’s potential. However, it can sometimes lead to artifacts if the scaling algorithm is poor. Therefore, it is best if the device immediately generates an image at the native screen resolution.
